The devil fish or giant devil ray (Mobula mobular) is a species of ray in the family Mobulidae. It is currently listed as endangered, mostly due to bycatch mortality in unrelated fisheries.

The Spinetail Devil Ray (Mobula mobular) is a large (to 350 cm DW) pelagic species which is circumglobal in tropical and subtropical waters from the surface to 1,112 m deep. Within this broad range, populations appear to be patchily distributed and the global population size is unknown.

Mobula mobular, a mobulid species once considered a Mediterranean Sea endemic, has received its common name “giant devil ray” based on repeated misidentifications of oceanic manta rays, Mobula birostris, that had strayed into the Mediterranean, where they had never been reported from before.